Recovery Rhenium Title - henrys-reime.de
Recovery Rhenium Title. Rhenium does not occur free in nature or as a compound in any distinct mineral instead it is widely distributed in small amounts in other minerals, usually in concentrations averaging about 01 parts per millionhile is the world leader in rhenium recovery, followed by the united states, poland, uzbekistan, and kazakhstan.
Recovery Rhenium Title - ostseepension-schmidt.de
Recovery Rhenium Title. Rhenium does not occur free in nature or as a compound in any distinct mineral instead it is widely distributed in small amounts in other minerals, usually in concentrations averaging about 01 parts per millionhile is the world leader in rhenium recovery, followed by the united states, poland, uzbekistan, and kazakhstan.
recovery rhenium title - ecole2baseball.fr
recovery rhenium title; recovery rhenium title. Rhenium Recovery By Solvent Extraction and Electrodeposition. The recovered rhenium contains only about 0.1 % Mo and spectrograph traces of other impurities, such as copper, aluminum, calcium, chromium, iron, platinum, and silicon.
recovery rhenium liquor - johannsoutdoor.nl
Recovery of rhenium from a molybdenite roaster fume , The rhenium content in the concentrate feed to the plant was typically 200 g/t Re The recovery of rhenium from the fume was about 85% as calculated from mass balance, indicating some gaseous Re might …
Recovery and separation of molybdenum and …
Recovery and separation of molybdenum and rhenium from a process solution was accomplished by a technique developed by the Federal Bureau of Mines involving a combined solvent extraction and activated carbon adsorption procedure.
US4521381A - Recovery of rhenium - Google Patents
In a process is disclosed for recovering rhenium from tungsten and rhenium bearing material by oxidizing and fusing the starting material, solubilizing the tungsten and rhenium values, passing the resulting solution through a strongly basic anion exchange resin to retain the rhenium, removing the rhenium from the resin with an organic stripping liquid of tributylphosphate and hydrochloric acid ...
Recovery of rhenium from tungsten-rhenium alloy …
Note: Citations are based on reference standards. However, formatting rules can vary widely between applications and fields of interest or study. The specific requirements or preferences of your reviewing publisher, classroom teacher, institution or organization should be applied.
Title: RECOVERY OF RHENIUM FROM TUNGSTEN …
The U.S. Department of Energys Office of Scientific and Technical Information
RECOVERY OF RHENIUM USING ION EXCHANGE …
5-6-2019 · The solution containing Mo and rhenium (and impurities) can be purified and processed by solvent extraction or ion exchange to produce ammonium perrhenate NH4ReO4 products for sale.
US1911943A - Recovery of rhenium - Google Patents
US1911943A US492397A US49239730A US1911943A US 1911943 A US1911943 A US 1911943A US 492397 A US492397 A US 492397A US 49239730 A US49239730 A US 49239730A US 1911943 A US1911943 A US 1911943A Authority US United States Prior art keywords rhenium material ores crude method Prior art date 1930-10-31 Legal status (The legal status is an assumption and is not a legal …
Rhenium - Wikipedia
Rhenium in the form of rhenium-platinum alloy is used as catalyst for catalytic reforming, which is a stone process to convert petroleum refinery naphthas with low octane ratings into high-octane liquid products. Worldwide, 30% of catalysts used for this process contain rhenium.
Recovery of rhenium - Universal Oil Products …
13-1-1976 · The efficient separation and recovery of rhenium from the trialkyl phosphate extract utilizing in excess of 11 normal nitric acid is precluded in view of the increased solubility of the trialkyl phosphates, particularly the preferred tributyl phosphate, at the higher nitric acid concentrations.
Process for rhenium recovery - Nihon Kogyo …
25-2-1986 · 1. A process for rhenium recovery by the use of an anion exchange resin, characterized in that rhenium is eluted from the rhenium-adsorbed anion exchange resin with a hydrochloric acid solution containing a metal chloride selected from the group consisting of cadmium chloride and zinc chloride. 2.
Recovery of rhenium from copper leach solution by …
title = "Recovery of rhenium from copper leach solution by ion exchange", abstract = "There is current interest in recovering rhenium from solutions produced as a result of copper heap and stockpile leaching. Copper-bearing leach solutions typically contain rhenium at concentrations near 1 mg/L.
Rhenium - pubs.er.usgs.gov
Rhenium is one of the rarest elements in Earth’s continental crust; its estimated average crustal abundance is less than 1 part per billion. Rhenium is a metal that has an extremely high melting point and a heat-stable crystalline structure. More than 80 percent of the rhenium consumed in the world is used in high-temperature superalloys, especially those used to make turbine blades for jet ...
Rhenium Recovery - scientific.net
Abstract: A device, was used to recover dust and rhenium from molybdenum concentrate roasting exhaust gas, was developed. The device combine the self-swash dust catcher and spherical tray tower technology: the self-swash dust catcher was used to recover dust and rhenium; spherical tray tower was used to further dust and rhenium recovery and its application to engineering in practice.
Recovery of tungsten and rhenium (Patent) | …
The U.S. Department of Energys Office of Scientific and Technical Information
The improvement of rhenium recovery technology …
The using of hydrometallurgical and electrochemical technologies is the most promising way to dissolve and recovery these metals in the form of prospective precursors. It is considered, that the fundamentals of an improved technology of rhenium recovery in the form of perrhenic acid from binary W-Re alloys.
Recovery of rhenium from aqueous mixed metal …
Rhenium was also recovered efficiently and selectively from rhenium–tungsten solutions (initial concentration 10.4 mM for each metal): when the pH ranged from 7.0 to 12.0 and the irradiation time was 6 h, the rhenium recovery was 90–95% and the rhenium recovery …
(PDF) The improvement of rhenium recovery …
The lack of rhenium raw materials sources on the territory of Russia leads to the necessity of this valuable metal recovery from wastes and secondary raw materials, in particular, from tungsten ...